Elaine,
I'm on Lialda and Rowasa and am having the same feelings. I'm only able to administer half of the enema as well... I squeeze and squeeze forever until I SWEAR there's nothing left in the bottle, there just can't be! So I pull it out, unscrew the cap to let air in, hold it up to the light, and there's still half left!! I just don't get it.
But lately I've had daily headaches that progress to migraines by the evening if I don't take something, usually I have to take Ibuprofen to get it to go away. I've also been waking up completely soaked but cold, and having "hot flashes" during the day. I get really dizzy and nauseous when I'm hungry, like exaggeratedly so, but other than that I haven't been dizzy. I've also been taking the Lialda either with breakfast or with lunch if I don't eat breakfast.
I hope you're able to find something that works for you and start feeling better soon. I know nothing is more frustrating than feeling worse when taking something that is supposed to be helping